<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <script src="./js/vue.js"></script>
</head>

<body>

  <div id="app">

    <h2>去除空格</h2>
    <input type="text" v-model="context" />

    <h2>{{ context | filterA }}</h2>

    <hr />



    <h2>四舍五入</h2>
    <input type="text" v-model="price" />

    <h2>{{ price | filterB }}</h2>


  </div>

  <script>
    new Vue({
      el: "#app",
      data: {
        context: "",
        price: 0
      },

      filters: {
        filterA: function (value) {
          return value.split(" ").join('')
        },

        filterB: function (value) {
          if (value == '') return
          return parseFloat(value).toFixed(2) + "元";
        }
      }
    })
  </script>

</body>

</html>